Caroline needs to find 15% of $128, but she doesn’t have a calculator. Thoroughly explain how she can do this mentally, detailing each step. Give the final answer.
Step-by-step explanation:Break the 15% into easy to think in the head factors, 10% and 5%. Ten percent of $128 is $12.8. Half of that is 5%, $6.40. Add them together for your 15% and you get $19.20.
